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- Page navigation anchor for Possible bias in obesity recordingPossible bias in obesity recordingI was prompted to remember the following anecdote on reading the research article. Some 40 years ago when I was teaching at Penn State University Medical School in the Family Medicine department, we used a set of 15 codes from the then new ICHPPC to find out if our residents were getting a sufficiently broad selection of patient contacts. One of these 15 was obesity, and I had the idea to do a quick survey of the rate of identification of this risk factor among the department’s young doctors and to construct a simple graph of this rate against the residents’ own BMI measurements. The results showed a rather linear inverse correlation in that the tubbier the doctor the fewer of his or her patients were judged to fall into the obese category. Might this still be operating? – and be occurring on this side of the “millpond”, I wonder?Competing Interests: None declared.